EPA Section 608 Universal Certification ExamType II (High-Pressure Appliances)Medium
A technician is performing a recovery from a high-pressure appliance containing 25 pounds of R-410A. The appliance was manufactured in 2017. What is the maximum time allowed to achieve the required recovery vacuum?
- A20 hours
- B10 hours
- C24 hours
- D15 hours
Show answer & explanationAnswer & explanation
Correct answer: B. 10 hours
For high-pressure appliances containing more than 10 pounds of refrigerant and manufactured after December 31, 1991, the EPA requires that 90% of the refrigerant be recovered within 10 hours, or 80% if the compressor is not operating. Since this question specifies 'required recovery vacuum', it refers to the 10-hour timeframe for achieving the proper recovery level.
Why the other options are wrong
- A. This is not an EPA-mandated recovery timeframe for this type of appliance.
- C. This is not an EPA-mandated recovery timeframe for this type of appliance.
- D. This is not an EPA-mandated recovery timeframe for this type of appliance.
High-Pressure Appliance Recovery Timeframes
EPA regulations specify maximum time limits for recovering refrigerant from high-pressure appliances based on the amount of refrigerant and the appliance's manufacturing date.
- For appliances >10 lbs, manufactured after 1991, 90% recovery must occur within 10 hours.
- If the compressor is not operating, 80% recovery must occur within 10 hours.
- These timeframes ensure efficient recovery and minimize emissions.
Memory trick: Ten hours to snatch those pounds, don't let the gas escape!